﻿<!DOCTYPE html>
<html>
<head> 
<meta charset="utf-8"> 
<title>div layout</title>
	<style type="text/css">
		div{
			background-color: rosybrown;
			height: 900px;
			margin: 70px auto;
			border: 30px solid red;
			padding: 40px;
		}
	</style>
</head>
<body>
<div>
	12313
</div>
</body>
</html>